Sponge iron is a metallic product produced through the direct reduction of iron ore in the strong state. It is a substitute for scrap and therefore is mostly applicable in making steel through the secondary …
There are four stages involved in the production of iron ore pellets. These stages consist of (i) raw material preparation, (ii) formation of green balls or pellets, (iii) induration of the pellets, and (iv) cooling, …
In the direct-reduced iron (DRI) process, the iron ores are reduced directly to sponge iron by gaseous reducing agents! Electro-steel process In the electric steel process, the sponge iron obtained from …
Liquid iron collects at the bottom of the blast furnace, underneath a layer of slag. The blacksmith periodically lets the liquid iron flow out and cool. At this point, the liquid iron typically flows through a channel and into a bed of …
India has sixth largest reserves of iron ore in the world. World's reserves of iron ore is around 150 billion tons having 47% average Fe contain. The proven reserves of hematite iron ore in India are around 12 billion tons including which high grade (>65% Fe) about 13%; Medium grade (62-65% Fe) about 47% and rest are low grades. The
Methods in iron Making Process 1. Coke-oven-Sinter-BF route 2. Direct Reduction Technique3. Smelting Reduction Technologies Page 5 Coke-oven-Sinter-BF route used by integrated steel plants that produce steel from iron ore. In this process, the iron ore is first subjected to a sintering process. Page 6
Scrap is usually melted down in an electric arc furnace (EAF), but can also be added to the mix in a basic oxygen furnace (BOF) to control heat in that part of the steelmaking process.
This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR ...
Direct iron reduction processes produce a form of sponge iron called direct reduced iron (DRI). Smelting reduction and direct iron reduction can reduce energy input, lower greenhouse gas emissions and …
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The overall production process inside the kiln requires a duration of 10-12 hours during which the iron ore is reduced and discharged to a rotary cooler for cooling below 1000C, to prevent reoxidation and effect a better separation of non-magnetic from sponge iron.
The direct reduction process aims to drive off the oxygen from all forms of the iron ore without melting it. It means the process's temperature must stay below the iron melting point (1,538 °C). The furnace heat is typically in the critical point in the range of 800–1200 °C. The process includes two methods, gas-based and coal-based.
Sponge iron production process discussed herein are selected from known methods of which the references are available and referable. We look at the 4 different methods of producing sponge iron: Midrex …
Reducing gas circulates in a closed system and is recycled The direct reduction process: Hot reducing gas flows through the iron ore, from the bottom to the top, according to the counterflow principle The …
We look at the 4 different methods of producing sponge iron: Midrex process HYL process (4th generation) or Energiron SL / RN process …
Sponge iron making process. 6. SECONDARY AIR Secondary air is introduced axially in the direction of the gas flow The air …
We have applied predictive data analytics techniques for off-line optimization of granulation and sintering of iron ore fines, for on-line optimization of sponge iron production in a rotary...
With such dimension of notion WE in our Sponge Iron Manufacturing process through 4 Kilns (1 * 350T and 3 * 500T) laid up the best DRI making process in India. It is Coal Fuel based DRI. Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state .As such it is also known as Direct Reduced Iron ...
Acordingly, to improve the evironmental performance of direct reduced iron plant and reduce the cost of production, there is an urgent need to introduce innovative, eco-friendly and energy...
As touched upon earlier, sponge iron is mainly produced from ore by two different routes – (a) by reducing gases (CO and H 2) in a shaft furnace, and (b) through direct treatment …
Sponge Iron. The sponge iron (DRI) produced as solid end product is melted in electric arc furnace consuming electrical energy. From: Treatise on Process Metallurgy: Industrial …
phenomena (heat, mass and momentum) to the process steps in Iron and Steelmaking as practiced in integrated steel plants. Be able to understand basic layout of blast furnace, steelmaking shop and continuous casting process. To develop computational and mathematical abilities to be applied for process design and control.
Modern developments in blast furnaces, including modelling and process control are discussed along with an introduction to the alternative methods of ironmaking. In the area of steelmaking, BOF plant practice including pre-treatment of hot metal, metallurgical features of oxygen steelmaking processes, and their control form part of the …
i need some resources about the production process and raw material of Silicon carbide saggers in sponge iron reduction via the tunnel kiln method.
The reduction of iron oxides takes place according to the following chemical equations: (1) F e 2 O 3 + 3 C O → 2 F e + 3 C O 2 (2) F e 2 O 3 + 3 H 2 → 2 F e + 3 H 2 O. In contrast to the blast furnace …
Sponge Iron is a substitute of scrap in steel melting. Although the reduction in the kiln is not direct, the CO gas reduces the impurities and oxides of hematite and the resultant DRI is in the solid form, this process is known as Direct Reduction Process.
Description. The invention belongs to the ironmaking field of engineering technology, relate to a kind of process for producing sponge iron, relate in particular to a kind of Finex of …
Ironmaking in the rotary hearth furnace (RHF) is a direct reduction process which utilizes non-coking coal for the reduction of iron ore. The RHF is the process reactor which consists of a flat, refractory …
Engineering Sponge iron making process of 20 IRON ORE • Iron = 65-67 % • SiO2 + Al2O3 = 2-3 % • CaO + MgO = 0,5-1 % • Sulphur = 0,02 % max • Phosphorus = 0,04 % max Chemical Composition • Size = 5-18 mm • Shatter Index = +95 % • Tumbler index = +88 % • Reducibility Index = +94 % • Thermal Degradation Index = 5 % Physical …
We look at the 4 different methods of producing sponge iron: Midrex process HYL process (4th generation) or Energiron SL / RN process Tunnel furnace process 1) Midrex process Miderx's involvement in the …
HOW IS SPONGE IRON MADE? Straight reduction refers to solid-state processes which lessen iron oxides to metallic iron at temperatures below the melting point of iron. Removing oxygen from the ore by a natural …
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Hammerscale is a common by-product of the forging process of iron and its modern recycling by the steelmaking industry is well known: hammerscale or mill scale is reduced to sponge iron...
ODCS, an application which is developed in matlab works in two parts. Firstly, it selects the most effective input variables for the desired targets using Akaike information criterion followed by...
During the last four decades, a new route of ironmaking has rapidly developed for direct reduction (DR) of iron ore to metallic iron by using noncoking coal/natural gas. This product is known...
The major areas or processes in the plant are mixing, balling, indurating and product handling. Mixing is where the properly ground ore is combined with binding agents like Bentonite or organic binders, fluxing agents like limestone or dolomite, and if the ore is a Hematite with coke or anthracite coal as an internal fuel.
The figure below shows the process of steelmaking using the DR-EAF route. Iron ore is reduced with hydrogen while in a solid state, hence the name direct reduction, to produce direct reduced iron (DRI) called sponge iron. Sponge iron is then fed into an EAF, where electrodes generate a current to melt the sponge iron to …
TRANSCRIPT. Sponge Iron Making ProcessALBERTUS SEPTYANTOKO 2712100014. PRIMARY AIRSECONDARY AIRINJECTION …
Review of Sponge Iron Making Process Historical Development: Sponge iron was the main source of iron for many centuries before the blast furnace technology of iron …